3x*5y+2x*6y=2.7*(3x+2x)怎么解
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3x*5y+2x*6y=2.7*(3x+2x)怎么解3x*5y+2x*6y=2.7*(3x+2x)怎么解3x*5y+2x*6y=2.7*(3x+2x)怎么解由方程式化简得15x*y+12x*y=2.7
3x*5y+2x*6y=2.7*(3x+2x)怎么解
3x*5y+2x*6y=2.7*(3x+2x)怎么解
3x*5y+2x*6y=2.7*(3x+2x)怎么解
由方程式化简得 15x*y + 12x*y = 2.7 * [ (3 + 2)* x ]
(15 + 12)*x*y = 2.7 * 5 * x
27* x * y = 2.7 * 5 * x
y = 2.7 * 5 * x /(27 * x)
y = 0.1 * 5
y = 0.5
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
3x*5y+2x*6y=2.7*(3x+2x)怎么解
[2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2
3x+5y-(x+y)=6 2(x+y)-3x=-7
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
（x+y-5)*（x+y-5)+（x-y+3)=0 x*x-y*y
已知:3x-5y=0,求x/y,x-y/y,x-y/x
2(2x+3y)(3x+2y)-(6x-y)(2x-5y)
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20
{(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20
4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6
（x+y）/2- x-y/2=6 3(x+y)=4(x-y)
x+y/3+x-y/2=6 4(x+y)-2(x-y)=40
(x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5)
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2
2(x+y)-3(x-y)=1 6(x+y)+(x-y)=51